Molekula
Tetrabutylammonium hydroxide 40% in methanol
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Tetrabutylammonium hydroxide 40% in methanol is a quaternary ammonium compound widely used as a phase-transfer catalyst in organic synthesis, as well as in analytical chemistry for ion pairing and extraction processes. It is a clear, colorless solution with strong basic properties. This product has a CAS number of 2052-49-5, with the molecular formula C16H37NO and a molecular weight of 259.47. It is stored at ambient conditions and carries a Signal Word of Danger due to its hazardous nature. Molekula supplies Tetrabutylammonium hydroxide 40% in methanol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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500 mL — £184.00 per pack ex VAT · £220.80 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Colourless or light yellow liquid |
| Colour (Pt-Co) | ≤80 |
| Identification | Conforms to reference |
| Assay | 40 ± 0.5% |
| Potassium (K) | ≤1.0% |
| Sodium (Na) | ≤0.1% |
| Bromine (Br) | ≤0.8% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 12 °C |
| Transport Class | 3 (6.1, 8) |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90027132 |
| CAS Number | 2052-49-5 |
| IUPAC Name | tetrabutylazanium hydroxide |
| EC Number | 218-147-6 |
| Molecular Formula | C16H37NO |
| Molecular Weight | 259.47 |
| Exact Mass | 259.2875 |
| SMILES | CCCC[N+](CCCC)(CCCC)CCCC.[OH-] |
| InChIKey | VDZOOKBUILJEDG-UHFFFAOYSA-M |
| InChI | InChI=1S/C16H36N.H2O/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H2/q+1;/p-1 |
| PubChem CID | 2723671 |
| UN Number | UN3286 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 3815909090 |
Safety & GHS
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Flammable
GHS02
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Corrosive
GHS05
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Toxic
GHS06
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Serious Health Hazard
GHS08
Hazard statements
- H225 Highly flammable liquid and vapour
- H301 + H311 + H331 Toxic if swallowed, in contact with skin or if inhaled
- H314 Causes severe skin burns and eye damage
- H370 Causes damage to organs
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1-Butanaminium, N,N,N-tributyl-, hydroxide
- 1-Butanaminium, N,N,N-tributyl-, hydroxide (1:1)
- Ammonium, tetrabutyl-, hydroxide
- N,N,N-Tributyl-1-butanaminium hydroxide
- TBAH
- Tetra-n-butylammonium hydroxide
- Tetrabutylammonium Hydroxide (1.0M in Methanol)
- Tetrabutylammonium hydroxide; Tetra-n-butylammonium hydroxide
- tetrabutylammonium oxide
- tetrabutylazanium;hydroxide
Frequently asked questions
What is tetrabutylammonium hydroxide (40% in methanol) commonly used for?
This product is primarily used as a phase-transfer catalyst in organic synthesis, as a reagent in polymer chemistry, and in analytical chemistry for ion-pair extraction.
What is the chemical formula and molecular weight of this compound?
The formula is **C₁₆H₃₇NO** (40% solution in methanol), and the molecular weight of the pure compound is **259.47 g/mol**.
How should tetrabutylammonium hydroxide (40% in methanol) be stored?
Store at **ambient temperature** in a tightly sealed container, away from moisture, oxidizing agents, and incompatible materials like strong acids.
What grade or purity is available for this product?
Molekula supplies this as a **technical-grade reagent (40% w/w in methanol)**, suitable for industrial and research applications requiring high purity.
Can Molekula supply this product in bulk quantities?
Yes, we offer **bulk packaging options** (e.g., drums or IBCs) for large-volume orders—please contact our sales team for pricing and lead times.
What documentation is provided with an order of this chemical?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.